<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta name="description" content="Change color of 3D models.">
    <meta name="cesium-sandcastle-labels" content="Showcases">
    <title>Cesium Demo</title>
    <script type="text/javascript" src="../Sandcastle-header.js"></script>
    <script type="text/javascript" src="../../../Build/CesiumUnminified/Cesium.js" nomodule></script>
    <script type="module" src="../load-cesium-es6.js"></script>
</head>
<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
<style>
    @import url(../templates/bucket.css);
    #toolbar {
        background: rgba(42, 42, 42, 0.8);
        padding: 4px;
        border-radius: 4px;
    }
    #toolbar input {
        vertical-align: middle;
        padding-top: 2px;
        padding-bottom: 2px;
    }
    #toolbar .header {
        font-weight: bold;
    }
</style>
<div id="cesiumContainer" class="fullSize"></div>
<div id="loadingOverlay"><h1>Loading...</h1></div>
<div id="toolbar">
    <table><tbody>
    <tr><td class="header">Model Color</td></tr>
    <tr>
        <td>Mode</td>
        <td><select data-bind="options: colorBlendModes, value: colorBlendMode"></select></td>
    </tr>
    <tr>
        <td>Color</td>
        <td><select data-bind="options: colors, value: color"></select></td>
    </tr>
    <tr>
        <td>Alpha</td>
        <td>
            <input type="range" min="0.0" max="1.0" step="0.01" data-bind="value: alpha, valueUpdate: 'input'">
            <input type="text" size="5" data-bind="value: alpha">
        </td>
    </tr>
    <tr>
        <td data-bind="style: { color: colorBlendAmountEnabled ? '' : 'gray'}">Mix</td>
        <td>
            <input type="range" min="0.0" max="1.0" step="0.01" data-bind="value: colorBlendAmount, valueUpdate: 'input', enable: colorBlendAmountEnabled">
            <input type="text" size="5" data-bind="value: colorBlendAmount, enable: colorBlendAmountEnabled">
        </td>
    </tr>
    <tr><td class="header">Model Silhouette</td></tr>
    <tr>
        <td>Color</td>
        <td><select data-bind="options: silhouetteColors, value: silhouetteColor"></select></td>
    </tr>
    <tr>
        <td>Alpha</td>
        <td>
            <input type="range" min="0.0" max="1.0" step="0.01" data-bind="value: silhouetteAlpha, valueUpdate: 'input'">
            <input type="text" size="5" data-bind="value: silhouetteAlpha">
        </td>
    </tr>
    <tr>
        <td>Size</td>
        <td>
            <input type="range" min="0.0" max="10.0" step="0.01" data-bind="value: silhouetteSize, valueUpdate: 'input'">
            <input type="text" size="5" data-bind="value: silhouetteSize">
        </td>
    </tr>
    </tbody></table>
</div>
<script id="cesium_sandcastle_script">
function startup(Cesium) {
    'use strict';
//Sandcastle_Begin
var viewer = new Cesium.Viewer('cesiumContainer', {
    infoBox : false,
    selectionIndicator : false,
    shadows : true,
    shouldAnimate : true
});

var entity;

function getColorBlendMode(colorBlendMode) {
    return Cesium.ColorBlendMode[colorBlendMode.toUpperCase()];
}

function getColor(colorName, alpha) {
    var color = Cesium.Color[colorName.toUpperCase()];
    return Cesium.Color.fromAlpha(color, parseFloat(alpha));
}

// The viewModel tracks the state of our mini application.
var viewModel = {
    color : 'Red',
    colors : ['White', 'Red', 'Green', 'Blue', 'Yellow', 'Gray'],
    alpha : 1.0,
    colorBlendMode : 'Highlight',
    colorBlendModes : ['Highlight', 'Replace', 'Mix'],
    colorBlendAmount : 0.5,
    colorBlendAmountEnabled : false,
    silhouetteColor : 'Red',
    silhouetteColors : ['Red', 'Green', 'Blue', 'Yellow', 'Gray'],
    silhouetteAlpha : 1.0,
    silhouetteSize : 2.0
};

// Convert the viewModel members into knockout observables.
Cesium.knockout.track(viewModel);

// Bind the viewModel to the DOM elements of the UI that call for it.
var toolbar = document.getElementById('toolbar');
Cesium.knockout.applyBindings(viewModel, toolbar);

Cesium.knockout.getObservable(viewModel, 'color').subscribe(
    function(newValue) {
        entity.model.color = getColor(newValue, viewModel.alpha);
    }
);

Cesium.knockout.getObservable(viewModel, 'alpha').subscribe(
    function(newValue) {
        entity.model.color = getColor(viewModel.color, newValue);
    }
);

Cesium.knockout.getObservable(viewModel, 'colorBlendMode').subscribe(
    function(newValue) {
        var colorBlendMode = getColorBlendMode(newValue);
        entity.model.colorBlendMode = colorBlendMode;
        viewModel.colorBlendAmountEnabled = (colorBlendMode === Cesium.ColorBlendMode.MIX);
    }
);

Cesium.knockout.getObservable(viewModel, 'colorBlendAmount').subscribe(
    function(newValue) {
        entity.model.colorBlendAmount = parseFloat(newValue);
    }
);

Cesium.knockout.getObservable(viewModel, 'silhouetteColor').subscribe(
    function(newValue) {
        entity.model.silhouetteColor = getColor(newValue, viewModel.silhouetteAlpha);
    }
);

Cesium.knockout.getObservable(viewModel, 'silhouetteAlpha').subscribe(
    function(newValue) {
        entity.model.silhouetteColor = getColor(viewModel.silhouetteColor, newValue);
    }
);

Cesium.knockout.getObservable(viewModel, 'silhouetteSize').subscribe(
    function(newValue) {
        entity.model.silhouetteSize = parseFloat(newValue);
    }
);

function createModel(url, height) {
    viewer.entities.removeAll();

    var position = Cesium.Cartesian3.fromDegrees(-123.0744619, 44.0503706, height);
    var heading = Cesium.Math.toRadians(135);
    var pitch = 0;
    var roll = 0;
    var hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
    var orientation = Cesium.Transforms.headingPitchRollQuaternion(position, hpr);

    entity = viewer.entities.add({
        name : url,
        position : position,
        orientation : orientation,
        model : {
            uri : url,
            minimumPixelSize : 128,
            maximumScale : 20000,
            color : getColor(viewModel.color, viewModel.alpha),
            colorBlendMode : getColorBlendMode(viewModel.colorBlendMode),
            colorBlendAmount : parseFloat(viewModel.colorBlendAmount),
            silhouetteColor : getColor(viewModel.silhouetteColor, viewModel.silhouetteAlpha),
            silhouetteSize : parseFloat(viewModel.silhouetteSize)
        }
    });
    viewer.trackedEntity = entity;
}

var options = [{
    text : 'Aircraft',
    onselect : function() {
        createModel('../../SampleData/models/CesiumAir/Cesium_Air.glb', 5000.0);
    }
}, {
    text : 'Ground Vehicle',
    onselect : function() {
        createModel('../../SampleData/models/GroundVehicle/GroundVehicle.glb', 0);
    }
}, {
    text : 'Hot Air Balloon',
    onselect : function() {
        createModel('../../SampleData/models/CesiumBalloon/CesiumBalloon.glb', 1000.0);
    }
}, {
    text : 'Milk Truck',
    onselect : function() {
        createModel('../../SampleData/models/CesiumMilkTruck/CesiumMilkTruck.glb', 0);
    }
}, {
    text : 'Skinned Character',
    onselect : function() {
        createModel('../../SampleData/models/CesiumMan/Cesium_Man.glb', 0);
    }
}];

Sandcastle.addToolbarMenu(options);

Sandcastle.addToggleButton('Shadows', viewer.shadows, function(checked) {
    viewer.shadows = checked;
});

//Sandcastle_End
Sandcastle.finishedLoading();
}
if (typeof Cesium !== 'undefined') {
    window.startupCalled = true;
    startup(Cesium);
}
</script>
</body>
</html>
